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HELI-COIL Screw-Locking Tanged Helical Insert - Screw-Locking Tanged Helical Inserts
HELI-COILScrew-Locking Tanged Helical Inserts

HELI-COIL Screw-Locking Tanged Helical Insert

3G Electric supplies the HELI-COIL Helical Insert: Tanged Tang Style, a screw-locking tanged helical insert in a 100-pack. This 18-8 stainless steel insert features a 5/16"-18 coarse thread, right-hand direction, dry…

SKU 3G-OTH-529099

Also listed as: A35855CNW312 · A3585 5CNW312

Brand
HELI-COIL
Item
Screw-Locking Tanged Helical Insert
Category
Screw-Locking Tanged Helical Inserts
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

HELI-COIL
Manufacturer Part Number
A3585-5CNW312
Type
Screw-Locking, 100 PK
Tensile Strength
200,000 to 250,000 psi
Finish Type
Dry Film Lubricant
Thread Size
5/16"-18
Thread Type
Coarse
STI Tap Size
5/16"-18
Thread Direction
Right Hand
Compatible Material
Metal
Material Grade/Class
18-8
System of Measurement
Inch

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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

3G Electric supplies the HELI-COIL Helical Insert: Tanged Tang Style, a screw-locking tanged helical insert in a 100-pack. This 18-8 stainless steel insert features a 5/16"-18 coarse thread, right-hand direction, dry film lubricant finish, and tensile strength of 200,000 to 250,000 psi. It is compatible with metal and requires an STI tap size of 5/16"-18. As an authorized distributor across 14 industrial departments, we interpret demand and deliver genuine parts like this insert with specialist support.

Frequently Asked Questions

What is a HELI-COIL helical insert used for?

A HELI-COIL helical insert repairs or reinforces threads in metal. This screw-locking tanged style prevents loosening under vibration. It is used in automotive, aerospace, and industrial maintenance to restore stripped threads or strengthen aluminum and other soft metals.

What are the specifications of the HELI-COIL A3585-5CNW312 insert?

This HELI-COIL insert has a 5/16"-18 coarse thread, right-hand direction, and is made of 18-8 stainless steel with a dry film lubricant finish. Tensile strength is 200,000 to 250,000 psi. It requires an STI tap size of 5/16"-18 and comes in a 100-pack.

Where to buy HELI-COIL helical inserts worldwide?

3G Electric supplies HELI-COIL helical inserts worldwide. We handle full logistics and customs clearance to deliver genuine parts like the A3585-5CNW312 to your facility. Contact us for availability and lead time on this 100-pack of screw-locking tanged inserts.

How to install a HELI-COIL tanged helical insert?

Drill out the damaged thread to the specified STI tap size (5/16"-18 for this insert), then tap the hole with the corresponding STI tap. Use a tang break-off tool to insert the coil, then break off the tang after installation. Ensure the hole is clean and lubricated.

Used in

Common applications for HELI-COIL
Aerospace engine repair — HELI-COIL STI taps for M12x1.75 metric threads in aluminum alloy components
Automotive transmission rebuild — HELI-COIL STI taps for 7/16-14 UNC threads in cast iron housings
Industrial pump maintenance — HELI-COIL STI taps for #10-32 UNF threads in stainless steel pump bodies
Hydraulic cylinder repair — HELI-COIL STI taps for M6x1 metric threads in steel cylinder heads
General manufacturing — HELI-COIL STI taps for 9/16-18 UNF threads in machinery base plates

HELI-COIL Products

3G Electric supplies HELI-COIL screw-locking tanged helical inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
These 18-8 stainless steel helical inserts are designed to repair or reinforce tapped threads in metal. They feature a screw-locking design that resists loosening under vibration, with a dry film lubricant finish. Each insert has a 1/4"-20 coarse right-hand thread and requires an STI tap size of 1/4"-20. Tensile strength ranges from 200,000 to 250,000 psi. Supplied in a pack of 100
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These 18-8 stainless steel helical inserts are designed to repair or reinforce tapped threads in metal. They feature a screw-locking design that resists loosening under vibration, with a dry film lubricant finish. Each insert has a 1/4"-20 coarse right-hand thread and requires an STI tap size of 1/4"-20. Tensile strength ranges from 200,000 to 250,000 psi. Supplied in a pack of 100
Screw-locking tanged helical insert for repairing or reinforcing threads in metal. Made from 18-8 stainless steel with a tensile strength of 200,000 to 250,000 psi. Features 1/4"-20 coarse thread, right-hand direction, and plain finish. Supplied in a 100-pack and requires an STI tap size of 1/4"-20
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Screw-locking tanged helical insert for repairing or reinforcing threads in metal. Made from 18-8 stainless steel with a tensile strength of 200,000 to 250,000 psi. Features 1/4"-20 coarse thread, right-hand direction, and plain finish. Supplied in a 100-pack and requires an STI tap size of 1/4"-20
Screw-locking tanged helical insert for repairing or reinforcing tapped threads in metal. Made of 18-8 stainless steel with dry film lubricant finish. #2-56 coarse thread, right-hand direction. Tensile strength 200,000 to 250,000 psi. Pack of 100
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Screw-locking tanged helical insert for repairing or reinforcing tapped threads in metal. Made of 18-8 stainless steel with dry film lubricant finish. #2-56 coarse thread, right-hand direction. Tensile strength 200,000 to 250,000 psi. Pack of 100
Screw-locking helical insert for repairing or reinforcing #8-32 coarse internal threads in metal substrates. Made from Nitronic 60 with a tensile strength of 200,000 psi, it features a tanged tang design for installation and a plain finish. Requires an STI tap size of #8-32. Supplied in a 100-piece pack
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Screw-locking helical insert for repairing or reinforcing #8-32 coarse internal threads in metal substrates. Made from Nitronic 60 with a tensile strength of 200,000 psi, it features a tanged tang design for installation and a plain finish. Requires an STI tap size of #8-32. Supplied in a 100-piece pack
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LYNDEX-NIKKEN Collet: TG100, 5/64 in (MPN 100-005)

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Screw-locking tanged helical insert for repairing or reinforcing #8-32 coarse threads in metal substrates. Made from 18-8 stainless steel with dry film lubricant finish, tensile strength 200,000 to 250,000 psi. Right-hand thread, requires STI tap size #8-32. Supplied in a 1,000-piece pack
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Screw-locking tanged helical insert for repairing or reinforcing #8-32 coarse threads in metal substrates. Made from 18-8 stainless steel with dry film lubricant finish, tensile strength 200,000 to 250,000 psi. Right-hand thread, requires STI tap size #8-32. Supplied in a 1,000-piece pack
Screw-locking tanged helical insert for repairing or reinforcing internal threads in metal. Features a #2-56 coarse right-hand thread, 18-8 stainless steel construction with dry film lubricant finish, and tensile strength of 200,000 to 250,000 psi. Supplied in packs of 1,000. Suitable for applications requiring vibration-resistant thread locking
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Screw-locking tanged helical insert for repairing or reinforcing internal threads in metal. Features a #2-56 coarse right-hand thread, 18-8 stainless steel construction with dry film lubricant finish, and tensile strength of 200,000 to 250,000 psi. Supplied in packs of 1,000. Suitable for applications requiring vibration-resistant thread locking
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Screw-locking tanged helical insert for repairing or reinforcing threads in metal substrates. Made from 18-8 stainless steel with a tensile strength of 200,000 to 250,000 psi. Requires a 5.2mm drill bit and M5-0.80 STI tap. Right-hand thread, plain finish, 100 pieces per pack
Metric right-hand helical insert made from Nitronic 60 with 200,000 psi tensile strength. Features screw-locking design to resist loosening under vibration. Requires STI tap size M4-0.70 and 4.2mm drill bit for installation. Used for thread repair or reinforcement in metal substrates
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Metric right-hand helical insert made from Nitronic 60 with 200,000 psi tensile strength. Features screw-locking design to resist loosening under vibration. Requires STI tap size M4-0.70 and 4.2mm drill bit for installation. Used for thread repair or reinforcement in metal substrates
Screw-locking tanged helical insert for repairing or reinforcing tapped threads in metal substrates. Features 1/4"-20 coarse right-hand thread, plain finish, 18-8 stainless steel, and tensile strength of 200,000 to 250,000 psi. Supplied in a 1,000-piece pack
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Screw-locking tanged helical insert for repairing or reinforcing tapped threads in metal substrates. Features 1/4"-20 coarse right-hand thread, plain finish, 18-8 stainless steel, and tensile strength of 200,000 to 250,000 psi. Supplied in a 1,000-piece pack
Screw-locking tanged helical insert for repairing or reinforcing internal threads in metal components. Made from 18-8 stainless steel with dry film lubricant finish, tensile strength 200,000 to 250,000 psi. Requires #4-40 STI tap, right-hand coarse thread. Pack of 100
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Screw-locking tanged helical insert for repairing or reinforcing internal threads in metal components. Made from 18-8 stainless steel with dry film lubricant finish, tensile strength 200,000 to 250,000 psi. Requires #4-40 STI tap, right-hand coarse thread. Pack of 100
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Screw-locking tanged helical insert for repairing or reinforcing threaded holes in metal. Made from Nitronic 60 with 200,000 psi tensile strength. Features #8-32 coarse thread, right-hand direction, and plain finish. Requires STI tap size #8-32. Supplied in a 100-piece pack
Screw-locking tanged helical insert for repairing or reinforcing threads in metal components. Made from 18-8 stainless steel with plain finish, M5-0.80 coarse thread, and right-hand direction. Requires 5.2mm drill bit and M5-0.80 STI tap. Tensile strength 200,000 to 250,000 psi. Supplied in pack of 100
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Screw-locking tanged helical insert for repairing or reinforcing threads in metal components. Made from 18-8 stainless steel with plain finish, M5-0.80 coarse thread, and right-hand direction. Requires 5.2mm drill bit and M5-0.80 STI tap. Tensile strength 200,000 to 250,000 psi. Supplied in pack of 100